BS EN ISO 7619-1:2010 Rubber, vulcanized or thermoplastic Determination of indentation hardness, Durometer method (Shore hardness).
This ISO 7619-1 specifies a method for determining the indentation hardness (Shore hardness) of vulcanized or thermoplastic rubber using durometers with the following scales:
⎯ the A scale for rubbers in the normal-hardness range;
⎯ the D scale for rubbers in the high-hardness range;
⎯ the AO scale for rubbers in the low-hardness range and for cellular rubbers;
⎯ the AM scale for thin rubber test pieces in the normal-hardness range.
Principle and choice of ISO 7619-1 durometer type
The property measured is the depth of penetration of a specified indenter forced into the material under specified conditions.
When using durometers, the scale should be chosen as follows:
⎯ for values less than 20 with a type D durometer: type A;
⎯ for values less than 20 with a type A durometer: type AO;
⎯ for values over 90 with a type A durometer: type D;
⎯ for thin test pieces (less than 6 mm thick): type AM.